Historical variability in fire at the ponderosa pine - Northern Great Plains prairie ecotone, southeastern Black Hills, South Dakota

Ecoscience ◽  
1999 ◽  
Vol 6 (4) ◽  
pp. 539-547 ◽  
Author(s):  
Peter M. Brown ◽  
Carolyn H. Sieg
1985 ◽  
Vol 2 (4) ◽  
pp. 105-107
Author(s):  
Peter R. Schaefer ◽  
Norman W. Baer

Abstract Ponderosa pine has been planted extensively in the northern Great Plains. Many of the plantings, however, have performed poorly or failed because of poor early survival and slow growth. A regional provenance test of 73 ponderosa pine sources was established in 1968 as one means of improving the performance of this species throughout the Great Plains. Results after 15 years indicated that three sources located in north central Nebraska and south central South Dakota were taller than all other sources. The three sources exhibited a height growth 30% above the plantation mean and an average survival 20% higher than that of the plantation as a whole. These sources have also been among the tallest and best survivors in similar tests throughout the Great Plains. Juvenile-mature correlations were strong for 5-year and 15-year height growth. The identification of a relatively small area from which to collect genetically improved ponderosa pine should greatly facilitate the incorporation of these seedlings into tree-planting efforts in the northern Plains. North. J. Appl. For. 2:105-107, Dec. 1985.


2009 ◽  
Vol 74 (4) ◽  
pp. 735-758 ◽  
Author(s):  
Frederic Sellet ◽  
James Donohue ◽  
Matthew G. Hill

The Jim Pitts site is a multicomponent Paleoindian locality in the Black Hills of South Dakota, with a rare Goshen residential occupation. All Paleoindian components were comprised in the Leonard paleosol. The deepest component at the site is a Goshen level dated to 10,185 ± 25 B.P. It correlates with a late fall-early winter camp site. Over the course of its use parts of at least five bison were procured and introduced to the site. Above this level an array of point styles, including Goshen, Folsom, Agate Basin, several Fishtail points, James Allen, Cody, and Alberta, have also been found. The following study provides a typological and technological description of the point assemblage and weighs the implications of the chrono-cultural stratigraphy for reconstructing the Paleoindian cultural landscape. It questions the validity of some types, particularly Goshen, as cultural and chronological markers. Ultimately, the evidence presented here reinforces a model in which multiple Paleoindian point types occur simultaneously on the central and northern Great Plains. This in turn challenges a unilineal view of Paleoindian culture history.


2018 ◽  
Vol 55 (2) ◽  
pp. 111-117 ◽  
Author(s):  
Kelli A. McCormick ◽  
Kevin R. Chamberlain ◽  
Colin J. Paterson

The largely buried basement of the northern Great Plains includes suture zones and terrane boundaries that represent a significant part of the growth of Laurentia in the Proterozoic. Basement exposures in this region east of the Black Hills are rare. In southeastern South Dakota, southwestern Minnesota, northeastern Nebraska, and northwestern Iowa, small outcrops of the Proterozoic Sioux Quartzite occur. In southeastern South Dakota, Corson diabase sills or dykes have intruded the quartzite. U–Pb ID–TIMS baddeleyite data from a Corson diabase sample yield an upper intercept date of 1149.4 ± 7.3 Ma, suggesting the diabase is related temporally to the Midcontinent Rift (MCR). The similarity in age of this diabase to the Inspiration sill, Pigeon River, Kipling, and Abitibi dykes suggests that early Midcontinent Rift development was not localized within the Nipigon Embayment, but extended along a roughly east–northeast zone from the Abitibi dykes to the Corson diabase. The presence of the Corson intrusions 250 km west of the MCR is hypothesized to represent a failed rift arm within the Superior craton. The greater strength of the Superior craton relative to lithosphere south of the Spirit Lake tectonic zone resulted in a shift of the southwestern rift arm in southern Minnesota along the Belle Plaine fault southeastward to the Iowa border. Alternatively, the apparent northeast trend of known occurrences of the Corson diabase is also consistent with a mantle plume centre explanation for early Midcontinent rifting.


2020 ◽  
Author(s):  
Paul Baldauf ◽  
◽  
Gregory Baker ◽  
Patrick Burkhart ◽  
Allen Gontz ◽  
...  

2010 ◽  
Vol 11 (1) ◽  
pp. 48
Author(s):  
T. Gulya ◽  
A. Mengistu ◽  
K. Kinzer ◽  
N. Balbyshev ◽  
S. Markell

Charcoal rot was first observed on sunflower in North and South Dakota in 1998, and was widespread on soybeans recently in Iowa, suggesting that Macrophomina may becoming more common in cooler growing areas of Midwestern United States. With the multitude of Macrophomina hosts in the northern Great Plains and the high incidence of microsclerotia we detected in soil, high disease potential may exist, suggesting that in drier, hotter years the sunflower crop may be affected by this disease. Accepted for publication 17 May 2010. Published 7 July 2010.


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